package com.kuang.bq;


import java.util.concurrent.BlockingQueue;
import java.util.concurrent.SynchronousQueue;
import java.util.concurrent.TimeUnit;

//同步队列
//和其他的BlockingQueue不一样 SynchronousQueue不存储元素
//put了一个元素,必须从里面take取出来,否则不能在put进去值
public class SynchronousQueueDemo {
    public static void main(String[] args) {
        //队列中要约束类型
        BlockingQueue<String> blockingQueue = new SynchronousQueue<>();//同步队列

        new Thread(()->{
            try {
                System.out.println(Thread.currentThread().getName() + "put 1");
                blockingQueue.put("1");
                System.out.println(Thread.currentThread().getName() + "put 2");
                blockingQueue.put("2");
                System.out.println(Thread.currentThread().getName() + "put 3");
                blockingQueue.put("3");
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        },"T1").start();
        new Thread(()->{
            try {
                TimeUnit.SECONDS.sleep(3);
                System.out.println(Thread.currentThread().getName()+blockingQueue.take());
                TimeUnit.SECONDS.sleep(3);
                System.out.println(Thread.currentThread().getName()+blockingQueue.take());
                TimeUnit.SECONDS.sleep(3);
                System.out.println(Thread.currentThread().getName()+blockingQueue.take());
            } catch (InterruptedException e) {
                e.printStackTrace();
            }
        },"T2").start();
    }
}
